Device for evaporative cooling of metallurgical furnaces

ABSTRACT

A device for evaporative cooling of metallurgical furnaces, which comprises banks of vertically arranged cooling members connected in series, wherein pipes for passing the coolant in each bank are connected to individual supply and discharge headers.

United I States Pateni Andoniev et ai.

1541 DEVICE FOR EVAPORATIVE COOLING OF METALLURGICAL FURNACES [72] inventors: Sergei Mikhailovich Andoniev, Gerber Leonid Moisevich, Grigory Ivanovich Kasyanov, Gennady Alexandrovich Kudinov, Dorina Borisovna Kutsykovich, Tamara Igovna Nissenbaum, Jury Borisovich Raik vsky a of K a k Mikha l Semenovich Somchenko, Kharkovskoi oblasti; Oleg Viadimirovich- Filipiev, Jury Petrovich Entis, both of Kharkov, all of U.S.S.R.

[73] Assignee: Vsesojuzny Nauchno-Issle dovaiel-sky i Preektny Institut p0 ochistke 'Ifeknol0gicheskikh ggzpv i stochuyjqi iprq n ktieninaij. 599. 52.9911! ,Yt r e y -res so Br priyaty Chernoi Metallurgii, USSR, Kharkov h [22] Filed: Sept. 30, 1970 1451 Sept. 26, 1972 211 App]. No.2 76,702

[52] US. Cl. ..l65/l0l, 165/146, 266/32 [51] int.Cl. ..F28i 27/02 [58] Field of Search.....266/32; 263/44; 165/76, 101, 165/146 [56] References Cited UNlTED STATES PATENTS 2,333,439 11/1943 Peters ..266/32 1,427,611 8/1922 MacCamy ..165/l01 Primary Examiner-Leonidas Vlachos Attorney-Holman & Stern [5 7] ABSTRACT A device for evaporative cooling of metallurgical furnaces, which comprises banks of vertically arranged cooling members connected in series, wherein pipes for passing the coolant in each bank are connected to individual supply and discharge headers.

2 Claims, 2 Drawing Figures PATENTEBsarzs m y 3.6 93; 708

SHEET 1 BF 2 FIE] SHEET. 2 UF 2 PATENTED SEP26 m2 'DEVICE'F OR EVAPORATIVE COOLING OF METALLURGICAL FURNACES The present invention relates generally to metallurgy, and more particularly to devices for evaporative cooling of metallurgical furnaces, specifically, blast furnaces.

Known-in the art is a device for evaporative cooling of blast furnaces that consists of vertically arranged members to be cooled, which members accommodate pipes (usually four) for passing the coolant, the members to be cooled being mutually interconnected along a vertical line by means of by-pass connection pipes and, together with supply and discharge headers and a source of coolant, constituting a closed circulation circuit, all the rows of the interconnected pipes of the vertical bank of the cooled members being connected in parallel to common headers.

The known device for evaporative cooling is disadvantageous in that when detecting a faulty pipe of the members to be cooled and disconnecting it, it is necessary to stop feeding the coolant to the entire vertical bank of the members being cooled.

The process of detecting and disconnecting the faulty pipe being rather long and involving repeated shutting off and feeding of the coolant to the bank of the members to be cooled, which otherwise may become considerably overheated, thermal stresses originate in said members causing damage thereof and thus shortening their service life.

It is an object of the present invention to eliminate said disadvantage.

The main object of the invention is to provide such a device, in which, when detecting faulty members being cooled and disconnecting them, the feeding of the coolant to all the rows of pipes of the cooled members will not be discontinued and, hence, adequate cooling of the'members will not be disturbed.

Said object is accomplished by the provision of a device for evaporative cooling of metallurgical furnaces, particularly, of blast furnaces, that includes banks of vertically arranged members which accommodate pipes for passing the coolant, said members being mutually interconnected along a vertical line by means 7 of external connection pipes, constituting, together with headers adapted to supply and discharge the coolant, vertical circulation circuits. According to the invention, the number of supply and discharge headers is equal to the number of pipes in the member being cooled and each row of vertically interconnected pipes in each bank of cooled members is connected to one of the headers that is common to similarly arranged rows of pipes in other vertical banks of the members being cooled.

It is preferred that even and odd rows of interconnected pipes in each bank of vertical cooled members be combined in pairs and connected to individual headers.

The device for evaporative cooling according to the invention ensures adequate cooling of the members of a vertical bank when detecting faulty pipes and discontinuing the feed of coolant to one or two rows of pipes (out of the four) in the members of the bank being checked.

The present invention will now be described by way of an exemplary embodiment thereof, with due reference to the accompanying drawings, in which:

FIG. 1 shows a principal diagram of the device for evaporative cooling according to the invention, with the number of supply and discharge headers in compliance with the number of members being cooled;

FIG. 2 shows the same device with-the even and odd rows of interconnected pipes combined in pairs and with each pair of rows coupled to individual headers.

The device for evaporative cooling of metallurgical furnaces, preferably of blast furnaces, proposed herein, comprises members 1 to be cooled (FIG. 1) which accommodate built-in pipes 2 for passing the coolant, said pipes being mutually interconnected along a vertical line by means of by-pass connection pipes 3 and constituting, together with supply headers 4 and discharge headers 5 provided with locking members 6 and a reservoir 7 containing a liquid to be evaporated, a closed circulation circuit.

The number of supply headers 4 and discharge headers 5 is equal to the number of pipes in the member being cooled, which in this particular case equals four.

The cooled members, interconnected along a vertical line, make up banks of members. The supply of the coolant to the members and its discharge therefrom is effected in such a manner that to each independent header only one of the rows of pipes of each vertical bank of members being cooled is coupled. The remaining rows of pipes of this member are also independently coupled each to its header, the headers being common to similarly arranged rows of pipes in other vertical banks of cooling members.

Such an embodiment of the device ensures, when detecting faulty pipes and disconnecting them in any bank of the members, the supply of the coolant to be discontinued by means of the locking member 6 only to one row of pipes of each bank of members, the circulation of the coolant being continued in the remaining rows of pipes, thus providing for normal cooling of the entire bank of the members being cooled.'This enables the prolonging of the life of the cooled members and facilitates their service.

In another embodiment of the device, including, according to the invention, the same structural members, the even and odd rows of the pipes 2 (FIG. 2) of each bank of the members 1 being cooled are interconnected, and each pair of the rows is coupled to the in-,

dependent individual headers 4 and 5 which number is two for each vertical bank of the cooling members.

With such an embodiment of the device, in the course of detection anddisconnection of faulty pipes the coolant is not fed only to two rows of pipes which are spaced from each other by another row, and only in one bank of members. In this case the other two rows of pipes remaining operative also ensure adequate cooling of the members.

What is claimed is:

I. A device for evaporative cooling of metallurgical furnaces, particularly blast furnaces, comprising banks of vertically arranged members to be cooled that accommodate pipes for passing the coolant, external pipes that connect the pipes of one cooling member of a bank with the pipes of another cooling member of the same bank, headers adapted to supply the coolant to, and discharge it from, said cooling members, said headers forming together with the external pipes and the pipes of the cooling members a vertical circulation the cooled members.

2. A device as claimed in claim 1, wherein even and odd rows of pipes in each bank of cooled members are combined in pairs and each pair of rows is coupled to individual headers. 

1. A device for evaporative cooling of metallurgical furnaces, particularly blast furnaces, comprising banks of vertically arranged members to be cooled that accommodate pipes for passing the coolant, external pipes that connect the pipes of one cooling member of a bank with the pipes of another cooling member of the same bank, headers adapted to supply the coolant to, and discharge it from, said cooling members, said headers forming together with the external pipes and the pipes of the cooling members a vertical circulation circuit, the number of the discharge and supply headers being equal to the number of the pipes in one cooling member, each row of verTically connected pipes in each bank being coupled to one of said supply headers and one of said discharge headers which are common to similarly arranged rows of pipes in the other banks of the cooled members.
 2. A device as claimed in claim 1, wherein even and odd rows of pipes in each bank of cooled members are combined in pairs and each pair of rows is coupled to individual headers. 